[Cement-free fixation of a stemless total knee endoprosthesis in animal experiments (author's transl)].

A stemless total knee endoprosthesis with physiological kinematics (slip and rolling motion, tibial rotation) and cement-free primary fixation (straddling dowel and thread system) was tested in animal experiments. The fixation allows total functioning of the operated extremity from the first day after operation. Primary results and follow-up for 40 weeks after operation reveal satisfactory results, especially with regard to durable bony incorporation of the prosthesis as shown by histologic and microangiographic studies.